Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5545906 | Non-volatile semiconductor memory device with contamination protection layers | Koichi Kanzaki | 1996-08-13 |
| 5532181 | Method of manufacturing semiconductor non-volatile memory device having different gate insulating thicknesses | Masataka Takebuchi, Daisuke Tohyama | 1996-07-02 |
| 5324972 | Semiconductor non-volatile memory device and method of manufacturing the same | Masataka Takebuchi, Daisuke Tohyama | 1994-06-28 |